Valve.



PATENTBD JULY 1o, 1906.

R. B. BURKE.

VALVE.

APPLICATION FILED DEG. Z0. 1905.

UNrTnD sTATns .PATENT OFFICE.

VALVEl Specification of Letters Patent.

Patented July 10,1906.

Application filed December 2091905. Serial No. 292.637.

To all whom it may concern:

Be it known that I, ROBERT E. BURKE, a citizen of the United States, residing at Hoboken, in the county of Hudson and State of New Jersey, have invented certain Improvements in Valves, of which the following is a specification.

This invention is an improvement in valves, and relates more especially to the'class of engineers" valves which are employed in connection with air-brake systems.

The principal objects ofthe invention are to provide a peculiar form of cylindrical valve which shallbe simple and cheap in construction, durable in use, easily operated, and in which thedisposition of the cavities in the cylindrical plu'g or valve proper is such with respect tothe intake and outlet openings in the casing or cylinder as to insure at all times a proper seating of the plug or valve proper without the employment of the usual springs.

With these general objects in view the invention consists in the particular construction and arrangement of parts constituting the valve, all as hereinafter fully described, and more specifically set forth in the appended claims.

In the'accompanying drawings, which form a part of this specification, Figure 1 is a longitudinal sectional view through the center of a valve constructed in accordance with my invention. Fig. 2` is a transverse sectional view on the line 2 2 of Fig. 1. Fig. 3 is a front end view of the valve with the covering-plate removed to show the manner of connecting the cylindrical plug or valve proper and its stem.

Like numerals of reference indicate like parts in all the iigures of the drawings.

Though primarily intended as an engineers valve for air-brake systems, it will be obvious that my improved form of valve may be used wherever a three-way valve is desired for the purpose of regulating the flow of any fluidpressure.

In carrying out m invention I employ, in

-the first place, a va ve-casing l, having the cylindrical chamber 2 and provided with the intake-opening 3 for the Huid-pressure and with openings 4 and 5, the opening 4, which is adjacent tili'e intake,` being adapted to connect with the train-pipe of an air-brake system or other conduit 6, while the opening 5, which is just beyond said opening 4, connects with an exhaust-pipe, as 7. Where the openings 4 'and 5 extend through the casing the latter may be enlargedyas shown, to provide a flat'surface against which is bolted the plate S, carrying the nipples for convenience in connecting the train `and exhaustpipes hereinbefore mentioned.' j *n In forming the valve-casingthe cylindrical chamber is preferably bored' all the way through and is afterward clcsed at its 'en 'ds by theplat'es or heads Q'and 10, through one of which, as 9, the valve-stem passes, for

which purpose said plate or head-is previ'd'e'd with the usuall stufli'ng-box 1'l'. The platS or heads 9 and 10 are securedl to the casing by means ofbolts or other fastenings; but it is obvious that instead of having both heads removable one of them may be formedI integrally with the body of the casing, if desired;

12 designates the rotatable cylindrical plug or valve proper, which in the presentinstance is of slightly lessdiameter thanthat of the cylindrical chamber, so as to ii't loosely therein and be forced closely against one side thereof under fluid-pressure; In one Side `0f this cylindrical plug or valve proper there is a cavity 13, which is semicircu'lar in Shape and of such width at its outer end as to 'eX- tend from the outer side of theope'ning 4 to the outer side of the opening 5 (see full lines, Fig. 2,) so that when the plug is in this position said openings will be in communication and the wall of the cylindrical plug or valve proper will close communication between either of said o enings and the intake-opening 3. It will a so be noted that the location of the intake-opening 3 with respect to the `trainipe opening 4 is such that when the cylin rical plug or valve roper is turned to the position indicated in otted lines in Fig. 2 the cavity 14 will establish communication between the intake-opening and the train-pipe, the exhaust -opening 5 being closed by the wall of the cylindrical plug or valve proper. Furthermore, when said cylindrical plug or valve proper is turned to a point intermediate the positions shown in the drawings-that is, with the wall closing the opening 4-the valve will be entirely closed and will be perfectly seated by the force of the Huid-pressure. l

As heretofore stated, the cylindrical plug or valve proper iits loosely in the chamber of the valve-casing, so that it will not` bind and may be easily turned, andin order to provide that said cylindrical plug `or valve proper will seat snugly and firmly to prevent escape or leakage of the fluid-pressure :in the opera- IOO IIO

tion of the valve in either position thereof I locate the cavity 14, hereinbefore referred to, directly opposite the semicircular cavity 13, Iand said cavity 14 is formed by cutting away nearly one-half of the cylindrical plug or valve proper, leaving the transverse wall 15, the ends of which latter abut against the walls of the casing. The bottom 4of the cavity 14 is preferably inclined upwardly from each side to the center, so as not to weaken the wall 15 on a line with the cavity 13./l It Will be readily seen that by providing the cavity 14 oppositefthe cavity 13 the former cavity will receive the Huid-pressure from the intake-opening 3 in any of the aforementioned positions of the cylindrical plug or valve proper, and the pressure being confined between the Wall 15 of the cylindrical plug and the opposite wall of the casing will cause the ends of said Wall to abut snugly against the casing and provide a close-fitting seat, thereby preventing leakage.

By the particular construction of valvecasing and cylindrical plug or valve proper I provide a closely-seating valve through the medium of the force of the fluid pressure which passes to the valve, and thereby dis- Ipense with the usual springs and the tapered form of valve-plug. This not only simplifies the valve and reduces its cost, but also reduces friction, making it easier to operate andrequiring considerably less lubricatingoil. Furthermore, inasmuchy as the cylindrical plug or valvel proper is seated by the force of the fluid-pressure any wear thereon is taken up by such ressure.

The cylindrical p ug or valve proper may be operated or turned by any suitable means, in the present instance by the handle 16, connected to or formed integrally with the valvestem 17, the latter being attached to the cylindrical plug or valve proper. In attaching the stem to the cylindrical plug or valve vproper I provide the former With a crossead, as 18, and insert the same in a corre-.

sponding recess, as 19, in the end of the cylindrical plug or valve proper, the parts being held in connection when the head 9 is bolted in place. By forming the valve-stem and cylindrical plug or valve proper sep arately, as described, either, part may be renewed at small expense, and the-same advantage is gained by making the valve-casing of several separable parts.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- 4 1. In a valve of the character described, the combination with a casing having a cylindrical chamber therein, an intake-opening, an outlet-opening adjacent the intake-opening and a second outlet-opening beyond the j other outlet, of a cylindrical plug or valve proper rotatable in the chamber of the casing and having cavities at opposite sides, one

of said cavities communicating with the intake-opening in any of the positions of the valve, substantially as shown and described,

2. In a valve of the character described, the combination, of a casing having a cylindrical chamber therein, an intake-opening, and outlet-opening adjacent the intake-opening and a second outlet-opening beyond the aforesaid outlet-opening, a cylindrical plug -or valve proper rotatable in the chamber of the valve-casing and having cavities at opposite sides its transverse center, and means for turning the cylindrical plug or valve proper.

3. In a valve of the character described, the combination, with a casing having a cylindrical chamber therein, an intake-opening and a pair of outlet-openings, of a cylindrical plug or valve proper rotatable in the chamber of the valve-casing having a semicircular cavity at one side and at the other side a cavity occupying nearly one-half of said cylindrical plug leaving a transverse wall, whereby the latter cavity communicates with the intake-opening in all the positions of the valve to cause the fluid-pressure to seat the valve, substantially as shown and described.

4. In a valve of the character described, the combination with the valve-casing having a cylindrical chamber therein, an intakeopening and outlet-openings, of a cylindrical plug or valve proper comprising cylindrical ends and a connecting-wall, the latter extending transversely to form cavities at opposite sides thereof, substantially as shown and for the purpose set forth.

5. In a valve for the purposes set forth, the combination with the valve-casing having a cylindrical chamber therein, an intake-opening and outlet-openings, of a cylindrical plug or valve proper comprising cylindrical ends and a connecting-wall extending transversely between said ends forming cavities at opposite sides of said wall, the bottom of one of said cavities approximating the diameter of the cylindrical plug or valve proper. i

6. In a valve of the character described,

IOS

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'the combination with'the valve-casing havcylindrical chamber, an inta e-openingand outlet-openings, a removable head forming one end of the casing and having an opening for the valve-stem, a cylindrical plug or valve proper rotatable in the chamber and having cavities in opposite sides and a transverse recess in one end, and a valve-stem projecting through the opening in the removable head of the casing and provided With a cross-head engaging the transverse recess of the Cylindrical plug or valve proper.

8. In a valve of the character described, the combination, of the easing 1 having the cylindrical Chamber 2, intake-opening 3 and outlet-openings 4 and 5, removable heads 9 and 1() forming the ends of the easing, a ey- Iindrical plug or valve proper 12 having the sernioireular cavity 13 at one side and the deeper cavity 14 at the other side, the latter communicating with the intake-opening in al1 the positions of the valve, said Cylindrical plug having a transverse opening at one end,

and a valve-stern extending through one'of I5 In testimony whereof I have signed my`2o name to this speeioation in the presence of two subscribing Witnesses.

ROBERT E. BURKE. Witnesses:

Wu. F. BURKE, JOHN PETERsEN 

